脫瀝青
A double-solvent process for the simultaneous deasphalting and solvent treating of a lubricating-oil stock or any residual or distillate base stock. 對潤滑油料或任何渣油或餾分油基礎(chǔ)油同時進行脫瀝青和溶劑精制的雙溶劑過程。
